I'd be decoding you'd be decoding she'd be decoding we'd be decoding you'd be decoding they'd be decoding
Perfect
I should've decoded you should've decoded she should've decoded we should've decoded you should've decoded they should've decoded
V-ing perfect
I should've been decoding you should've been decoding she should've been decoding we should've been decoding you should've been decoding they should've been decoding
Negation
Simple form
I shouldn't decode you shouldn't decode she shouldn't decode we shouldn't decode you shouldn't decode they shouldn't decode
V-ing form
I shouldn't be decoding you shouldn't be decoding she shouldn't be decoding we shouldn't be decoding you shouldn't be decoding they shouldn't be decoding
Perfect
I shouldn't have decoded you shouldn't have decoded she shouldn't have decoded we shouldn't have decoded you shouldn't have decoded they shouldn't have decoded
V-ing perfect
I shouldn't have been decoding you shouldn't have been decoding she shouldn't have been decoding we shouldn't have been decoding you shouldn't have been decoding they shouldn't have been decoding
Interrogative form
Simple form
should I decode? should you decode? should she decode? should we decode? should you decode? should they decode?
V-ing form
should I be decoding? should you be decoding? should she be decoding? should we be decoding? should you be decoding? should they be decoding?
Perfect
should I have decoded? should you have decoded? should she have decoded? should we have decoded? should you have decoded? should they have decoded?
V-ing perfect
should I have been decoding? should you have been decoding? should she have been decoding? should we have been decoding? should you have been decoding? should they have been decoding?
Interro-negative form
Simple form
shouldn't I decode? shouldn't you decode? shouldn't she decode? shouldn't we decode? shouldn't you decode? shouldn't they decode?
V-ing form
shouldn't I be decoding? shouldn't you be decoding? shouldn't she be decoding? shouldn't we be decoding? shouldn't you be decoding? shouldn't they be decoding?
Perfect
shouldn't I have decoded? shouldn't you have decoded? shouldn't she have decoded? shouldn't we have decoded? shouldn't you have decoded? shouldn't they have decoded?
V-ing perfect
shouldn't I have been decoding? shouldn't you have been decoding? shouldn't she have been decoding? shouldn't we have been decoding? shouldn't you have been decoding? shouldn't they have been decoding?